Quantum Fiber Availability

Check whether Quantum Fiber reaches your address, see where its network runs, and compare it against the other providers serving you.

By , Editor · Updated August 15, 2026 · Availability figures from the FCC Broadband Data Collection, as of December 31, 2025

Quantum Fiber at a glance

Quantum Fiber, from Lumen Technologies, Inc., is a fiber-to-the-home network covering a wide western and midwestern footprint inherited from CenturyLink. Its plans commonly range from 500 Mbps up to 8 Gbps where available, and it is known for flat, all-in monthly pricing with no contracts on fiber plans. FiberNear tracks it in 3 markets.

  • Quantum Fiber is fiber to the home, operated by Lumen Technologies, Inc..
  • Coverage: a wide western and midwestern footprint inherited from CenturyLink.
  • Plans: plans commonly range from 500 Mbps up to 8 Gbps where available. Tiers and pricing are set by Lumen Technologies, Inc. and vary by address.
  • Of the markets FiberNear tracks where it operates, Salt Lake City, UT has the most fiber overall at 79.6% of residential locations — a figure describing the market, not this provider's own footprint.
  • Quantum Fiber is built out address by address, so the only reliable check is at your specific address. FiberNear checks it free and is not affiliated with Lumen Technologies, Inc..

Availability figures: FCC Broadband Data Collection, as of December 31, 2025. Page updated August 15, 2026.

How to check Quantum Fiber availability

Quantum Fiber is built out address by address, so a coverage map only tells part of the story — two homes on the same block can get different answers depending on which side of the street the conduit was trenched. The reliable check is address-level.

  1. Enter your full street address, not just your ZIP code. ZIP-level results are averages and will mislead you.
  2. We compare it against Quantum Fiber and the other fiber and high-speed networks we can identify at that location.
  3. You get the list of what you can actually order, with next steps. Free, and no obligation.

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Where Quantum Fiber operates

These are the markets FiberNear tracks where Quantum Fiber is active. The percentages are the share of each city's residential locations reached by fiber of any brand — Quantum Fiber is one of several networks in most of these markets, so treat the figure as how fiber-ready the city is, not as Quantum Fiber's own footprint.

Markets served by Quantum Fiber with citywide fiber availability
MarketFiber availableFiber gigabit
Salt Lake City, UT79.6%76.2%
Denver, CO64.2%48.6%
Phoenix, AZ27.1%10.3%

Source: FCC Broadband Data Collection, residential fixed broadband, as of December 31, 2025. Figures are advertised availability self-reported by providers, not measured speeds. Provider presence in each market is FiberNear's own editorial assessment, not an FCC figure.

How Quantum Fiber compares

Most addresses that can get Quantum Fiber can get at least one competing network too, and the right answer usually comes down to which one actually reaches the property. Other fiber to the home providers we track:

AT&T Fiber

100% fiber-optic.

Frontier Fiber

Fiber-to-the-home.

Google Fiber

Fiber-to-the-home.

Verizon Fios

100% fiber-optic.

Metronet

100% fiber-optic.

Ziply Fiber

Fiber-to-the-home.

See every provider in the full provider directory.

Common questions about Quantum Fiber

How do I check if Quantum Fiber is available at my address?
Quantum Fiber is built out address by address, so a coverage map will not answer the question for a specific home — two houses on the same street can get different answers. Enter your street address in the checker on this page and FiberNear will confirm whether Quantum Fiber, or another fiber provider, can actually serve your location. It is free and there is no obligation.
Is Quantum Fiber fiber or cable?
Quantum Fiber is fiber. The connection runs on optical fiber all the way to the property rather than coaxial cable or a copper phone line, which is why fiber plans typically offer matching upload and download speeds where cable does not.
Which cities does Quantum Fiber serve?
Quantum Fiber operates across a wide western and midwestern footprint inherited from CenturyLink. Among the metros FiberNear tracks, it is active in Salt Lake City, UT, Denver, CO, Phoenix, AZ. The best-covered of those for fiber generally is Salt Lake City, UT, where fiber of some brand reaches 79.6% of residential locations according to FCC filings as of December 31, 2025.
What speeds does Quantum Fiber offer?
Quantum Fiber plans commonly range from 500 Mbps up to 8 Gbps where available. Tiers, pricing and promotional terms are set by Lumen Technologies, Inc. and vary by address — confirm them with the provider before you order.
Is FiberNear affiliated with Lumen Technologies, Inc.?
No. FiberNear is an independent comparison and referral service. We are not an internet service provider and we are not affiliated with, endorsed by, or sponsored by Lumen Technologies, Inc.. Quantum Fiber is a trademark of its owner, used here for identification only.

FiberNear is an independent comparison service and is not affiliated with, endorsed by, or sponsored by Lumen Technologies, Inc.. Quantum Fiber is a trademark of its owner, used here for identification only. Availability, speeds and pricing are set and confirmed by the provider.